mailserver-v1.2.0

• BREAKING CHANGE: Start-up files restructured. We now use individual systemd service files for each monitoring service.
  Migration is straightforward and only takes a few minutes.
  See https://github.com/t-lo/mailserver/wiki#migrating-from-mailserver-113-or-lower-to-to-mailserver-120-or-higher for migrating existing installations (mailserver-1.1.2 or lower) to the new release.
• Alpine upgraded to 3.19.1
• Core packages updated to latest available versions.
• Releases now include core package versions.
• Release package versions:
  • alpine: 3.19.1
  • postfix: postfix-3.8.6-r0
  • certbot: certbot-2.7.4-r0
  • opendkim: opendkim-2.11.0-r3
  • opendmarc: opendmarc-1.4.2-r0
  • caddy: caddy-2.7.6-r1
  • dovecot: dovecot-2.3.21-r17
  • fail2ban: fail2ban-1.0.2-r3
  • supervisor: supervisor-4.2.5-r4
  • Postfix prometheus exporter: 0.3.0
  • Fail2Ban prometheus exporter: 0.10.1